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Property, Plant and Equipment (Parenthetical) (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Oil and gas proved properties    
Property, Plant and Equipment [Line Items]    
Cumulative capitalized interest $ 23.4us-gaap_AccumulatedCapitalizedInterestCosts
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= sd_OilAndGasProvedPropertiesMember
$ 11.7us-gaap_AccumulatedCapitalizedInterestCosts
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= sd_OilAndGasProvedPropertiesMember
Non-oil and natural gas equipment    
Property, Plant and Equipment [Line Items]    
Cumulative capitalized interest 4.3us-gaap_AccumulatedCapitalizedInterestCosts
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= sd_NonOilAndNaturalGasEquipmentMember
4.3us-gaap_AccumulatedCapitalizedInterestCosts
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= sd_NonOilAndNaturalGasEquipmentMember
Building and structures    
Property, Plant and Equipment [Line Items]    
Cumulative capitalized interest $ 12.0us-gaap_AccumulatedCapitalizedInterestCosts
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_BuildingMember
$ 7.1us-gaap_AccumulatedCapitalizedInterestCosts
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_BuildingMember